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v3.25.0.1

Employee and Agent Benefits - Supplemental Information, Qualified and Nonqualified Plans (Details) - Pension benefits - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Amount recognized in statement of financial position |  |  |
Amount recognized in other liabilities | $ (432.2) | $ (481.3) |
Total assets (liabilities) recognized in statement of financial position | (432.2) | (481.3) |
Amount recognized in accumulated other comprehensive (income) loss |  |  |
Total net actuarial (gain) loss | 371.7 | 425.4 |
Prior service (benefit) cost | (53.9) | (70.6) |
Pre-tax accumulated other comprehensive (income) loss | 317.8 | 354.8 |
Components of Net Periodic Benefit Cost (Income) |  |  |
Service cost | 59.2 | 55.6 | $ 78.4
Interest cost | 161.5 | 160.1 | 112.8
Expected return on plan assets | (170.4) | (163.2) | (178.9)
Amortization of prior service (benefit) cost | (16.7) | (16.8) | (16.8)
Recognized net actuarial (gain) loss | 39.0 | 41.0 | 55.7
Settlement | 0.2 |  |
Net periodic benefit cost (income) | 72.8 | 76.7 | $ 51.2
Other changes recognized in accumulated other comprehensive (income) loss |  |  |
Net actuarial (gain) loss | (14.5) | 24.4 |
Amortization of gain (loss) | (39.0) | (41.0) |
Amortization of prior service benefit (cost) | 16.7 | 16.8 |
Settlement | (0.2) |  |
Total recognized in pre-tax accumulated other comprehensive (income) loss | (37.0) | 0.2 |
Total recognized in net periodic benefit cost and pre-tax accumulated other comprehensive (income) loss | 35.8 | 76.9 |
Qualified benefit plans |  |  |
Amount recognized in statement of financial position |  |  |
Amount recognized in other liabilities | (34.9) | (58.3) |
Total assets (liabilities) recognized in statement of financial position | (34.9) | (58.3) |
Amount recognized in accumulated other comprehensive (income) loss |  |  |
Total net actuarial (gain) loss | 331.0 | 361.4 |
Prior service (benefit) cost | (47.4) | (60.0) |
Pre-tax accumulated other comprehensive (income) loss | 283.6 | 301.4 |
Components of Net Periodic Benefit Cost (Income) |  |  |
Service cost | 55.2 | 51.6 |
Interest cost | 141.6 | 139.7 |
Expected return on plan assets | (170.4) | (163.2) |
Amortization of prior service (benefit) cost | (12.7) | (12.6) |
Recognized net actuarial (gain) loss | 35.5 | 38.8 |
Settlement | 0.2 |  |
Net periodic benefit cost (income) | 49.4 | 54.3 |
Other changes recognized in accumulated other comprehensive (income) loss |  |  |
Net actuarial (gain) loss | 5.2 | 9.5 |
Amortization of gain (loss) | (35.4) | (38.8) |
Amortization of prior service benefit (cost) | 12.7 | 12.6 |
Settlement | (0.2) |  |
Total recognized in pre-tax accumulated other comprehensive (income) loss | (17.7) | (16.7) |
Total recognized in net periodic benefit cost and pre-tax accumulated other comprehensive (income) loss | 31.7 | 37.6 |
Nonqualified benefit plans |  |  |
Amount recognized in statement of financial position |  |  |
Amount recognized in other liabilities | (397.3) | (423.0) |
Total assets (liabilities) recognized in statement of financial position | (397.3) | (423.0) |
Amount recognized in accumulated other comprehensive (income) loss |  |  |
Total net actuarial (gain) loss | 40.7 | 64.0 |
Prior service (benefit) cost | (6.5) | (10.6) |
Pre-tax accumulated other comprehensive (income) loss | 34.2 | 53.4 |
Components of Net Periodic Benefit Cost (Income) |  |  |
Service cost | 4.0 | 4.0 |
Interest cost | 19.9 | 20.4 |
Amortization of prior service (benefit) cost | (4.0) | (4.2) |
Recognized net actuarial (gain) loss | 3.5 | 2.2 |
Net periodic benefit cost (income) | 23.4 | 22.4 |
Other changes recognized in accumulated other comprehensive (income) loss |  |  |
Net actuarial (gain) loss | (19.7) | 14.9 |
Amortization of gain (loss) | (3.6) | (2.2) |
Amortization of prior service benefit (cost) | 4.0 | 4.2 |
Total recognized in pre-tax accumulated other comprehensive (income) loss | (19.3) | 16.9 |
Total recognized in net periodic benefit cost and pre-tax accumulated other comprehensive (income) loss | $ 4.1 | $ 39.3 |

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